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Exploration of those parts of the brain supplied by the posterior cerebral artery

Longitudinal bundle of fibers within hippocampus continuous with medial longitudinal stria

Image #20-2

KEYWORDS: Brain, Telencephalon.

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Higher resolution images are available for a fee. Contact Drew Bourn, PhD, MLIS.

Exploration of those parts of the brain supplied by the posterior cerebral artery

Longitudinal bundle of fibers within hippocampus continuous with medial longitudinal stria

Further dissection of the upper parts of the dentate fascia and hippocampus has revealed a discret system of fibers (15) which can be traced through the fasciola cinerea beneath the splenium of the corpus callosum and upward toward the induseum griseum (supracallosal gyrus) where it apparently is continued as the medial longitudinal stria. No evidence of a lateral longitudinal stria could be found in this specimen. Near the splenium some of the tissue of the induseum griseum is scraped away to reveal the fibers of the corpus callosum.

1 .	Cingulum
2 .	"Induseum griseum" (supracallosal gyrus) covering fibers of corpus callosum
3 .	Pulvinar
4 .	Substantia nigra
5 .	Basilar artery (cut across)
6 .	Surface of uncus facing hippocampal fissure
7 .	Internal carotid artery right (cut across)
8 .	Uncus (hippocampal gyrus)
9 .	Posterior rhinal fissure
10 .	Parieto-occipital fissure
11 .	Parieto-occipital branch of posterior cerebral artery
12 .	Occipital part radiations of corpus callosum
13 .	Medullary substance of occipital lobe
14 .	Posterior horn lateral ventricle
15 .	Bundle of fibers lying within hippocampus and continuing into supracallosal gyrus
16 .	Hippocampal fimbria
17 .	Hippocampus (dissected from below)
18 .	Dentate fascia exposed along hippocampal fissure
19 .	Inferior temporal gyrus
20 .	Inferior horn of lateral ventricle